Eddy current and variable reluctance test apparatus for rollers

Details Eddy current and variable reluctance test apparatus for rollers Eddy current and variable reluctance test apparatus for rollers

1977-09-06

1979-05-22

Spar, Robert J.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

209570, 209701, 209916, 324232, B07C 5344

Patent

active

041554558

ABSTRACT:
Non-destructive testing apparatus for rollers and the like of magnetic material comprises a pair of rotating spin rails having intermediate sections of magnetic material. Feeding apparatus deposits rollers on the spin rails and moves them successively past the magnetic sections. A magnet produces flux through the magnetic sections and a roller rotating thereon. Variable reluctance sensing apparatus senses changes in the flux. An eddy current test probe is positioned adjacent the magnetic sections. Variable reluctance and eddy current test circuits produce flaw output signals which control apparatus for segregating the rollers. Advantageously the feeding apparatus intermittently deposits successive rollers on the spin rails and intermittently moves the rollers along the rails in end-to-end relationship. Flaw signals are stored and utilized for segregation after a predetermined number of intermittent movements of the rollers to an ejection station where they are raised and deflected from the spin rails into segregating chutes. Particular feeding apparatus using a channeled head movable over a slot are described. In a modification for testing tapered rollers, a cam follower and guide tapered roller maintain a constant spacing of the eddy current probe from the roller under test. Timing apparatus are described for making the eddy current test during forward movement of a roller past the probe, and the variable reluctance test during intervals between the forward movements.

REFERENCES:
patent: 2441380 (1948-05-01), Zuschlag
patent: 2989179 (1961-06-01), Woods et al.
patent: 3271664 (1966-09-01), Mountz et al.
patent: 3355014 (1967-11-01), Howles
patent: 3538433 (1970-11-01), Wood et al.

Affiliated with

Also associated with

Rating

Eddy current and variable reluctance test apparatus for rollers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Eddy current and variable reluctance test apparatus for rollers , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eddy current and variable reluctance test apparatus for rollers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1036433